[lkml]   [2011]   [Jun]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [RFC] Add Arm cpu topology definition
On 06/16/2011 11:54 PM, Vincent Guittot wrote:
> On 16 June 2011 21:40, Stephen Boyd <> wrote:
>> The ARM ARM says these fields are IMPLEMENTATION DEFINED meaning that
>> different vendors may attribute different meaning to these fields if
>> they wish. Does that mean this should be a platform_*() function?
> The ARM ARM also provides a recommended use of the fields of this
> register and the TRM of each Cortex adds some details. On the cortex
> A9, each platform can only set the value of the Cluster ID with the
> CLUSTERID pins. I have tried to consolidate the value of MPIDR across
> several platforms and they all match with the description.
> Have you got an example of a MPIDR register which doesn't match with
> the implementation ?

Not that I know of. I'm more concerned with how the ARM ARM has two
recommended usages for these fields depending on virtualization or not.
I suppose we can handle that issue when it arises (or does your
implementation already handle that?)

Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.

 \ /
  Last update: 2011-06-21 22:39    [from the cache]
©2003-2014 Jasper Spaans. hosted at Digital Ocean